David l



' (NoMoael.) Y.

D. L. OSBORN.

STOVE PIPE DAMBER.

UNITED STATES- DAVID L. OSBORN, OF KANSAS CITY, MISSOURI,

MESCHLE, OF SAME PLACE.

T OFFICE ASSIGNOR TO HARRY STOVE-PIPE DAM PER.

SPECIFICATION forming part of Letters Patent No. 428,129, dated May 20,1890.

Application filed October 25, 1889. Serial No. 328,173. (No model.) l

To all wiz/0771, it may concern:

Be it known that I, DAVID L. OsBORN, of Kansas City, Jackson county,Missouri, have inven Led certain new and useful Improvements inStove-Pipe Dampers, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart hereof.

My invention consists of a new and improved damper and ventilator to beapplied to stoves, furnaces, boilers, and heating ap paratuses, wherebythe heat, draft, and ventilation may be regulated as desired and by willof operator, of Which the following is a full, clear, and exactdescription.

My invention consists of an improved device and arrangement forregulating the heat, draft, and ventilation by means of two valvesthemain and auxiliary valve, the main valve and its relative adjustments soarranged with its relative connection that it operates the auxiliaryvalve in its movements and adjust'- ments, as hereinafter described.

First. The valves are arranged in their relative position in thev smokepipe or flue so as to admit and allow the valves to oscillate in and outas desired. Second. The valve-seats are created and formed by removingva circular piece, the size being one-half of the diy mension of thecircumference of pipe. Third.

Main valve is formed from a piece of iron one-half inch larger indiameter than the incision in the smoke-pipe, and soarranged in itsconstruction as to allow one half of the valves to be inserted in theopening in smokepipe and to rest upon its seat on or within the side ofthe sm0ke-pipe, and the other half to rest upon its seat on the outsideof smokepipe, which device effectually closes the incision in piperesting upon its seat when closed. Fourth. rlhe main valve is hung orhinged at its diameter upon pivots to the center of opening orvalve-seats, and is sol secured as to admit the valve to open and closein its oscillating movements. Fifth. The auxiliary valve is arranged,placed, and secured above the main valve in smokepipe, and itsconnections are adjusted to receive the reciprocative movements with themovement of the main valve. Sixth. The auxiliary valve is formed fronrapiece of iron cut to the radius of the pipe it is to perform its work.Seventh. The auxiliary valve is hung and hinged upon a rod passingthrough the Vauxiliary valve at the center of smoke-pipe and so arrangedas to stand upright or vertical. Eighth. Projecting arm is then securedto the auxiliary valve at its center and projects out one-half of theradius of the smokepipe, or equal to three-fourths of diameter ofsmoke-pipe. Ninth. The projecting arm of auxiliary valve hangs downwardand is so adjusted to the main valve that the movement of the main valveis transmitted to the auxiliary valve in its relative position. lVhenthe main valve is closed, the auxiliary is open, and, vice versa, mainvalve open, auxiliary valve closed. Tenth. The device and arrangement ofthe connecting-rod that joins and unites the two valves-the main andauxiliary valve-is formed by connecting-rod secured or toggled to theprojecting arm of auxiliary valve, and then passes downward, theauxiliary remaining upright, or vertically passing through a seat formedby a bracket secured to the main valve to pass upward and downward onthe connecting-rod, which transmits its motions to the auxiliary valve.f

Referring to the drawings by letter, Figure l is a perspective view ofmy damper located in a short section of pipe. A is the pipe. E is thebearing of the rod that holds the aux iliary valve in position in thepipe. Gis the front portion of the damper. `a is the handle by which thedamper is opened and closed. d is the head of the pivot, to which arm B(seen at Fig. 2) is connected to the damper. F is a seat or hinged jointon which the damper gets its oscillating movement.

Fig. 2 is a sectional view of my invention, showing the interiorarrangement of its different parts; D, an oscillating damper; E, a rodpassing through the center of the pipe, on which the auxiliary damperoperates. C is an extended flap, hinged at b to arm B, connecting thetwo dampers together.

Fig. 9 is the upper portion of the damper lapping over the cutawayportion of the stove-pipe when in a closed position; Fig. 10, the lowerportion of the pipe cut away, the

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dotted lines showing the edge of the damper1mi/'ingudownWzndly-extending flap thereon,

when in n closed position. :md an arm pivoted to the upper portion ofHaving; thus described my invention, that the main damper and having :Lpivotal oonwhieh I Claim, and desire protection in by neetion witlitheflap on theauxiliarydmnper. 15

5 Letters Patent of the United States, is- In testimony whereof Iaxmysignature in In :L stovepipe damper, the combination of presence oftwo witnesses. :t man1 damper pivoted midway of ltslength DAVID L OSBORNin the pipe, the upper half of the said dam per engaging the interiorand the lower half the Titnessesz 1o exterior of the pipe, :tselnieireular auxiliary R. A. BALDERSON, dmnper pivoied above the maindamper and A. A. II'IGDON.

